Adding a new mouse navigation option to FreeCAD

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This tutorial is still a WIP. Feel free to help improve it
Freecad.svg Tutorial
Adding new navigation option to FreeCAD
Time to complete
FreeCAD version
0.19.x and above
Example files
See also


This tutorial attempts to help developers understand how to add their own custom 'mouse' models to FreeCAD. There are currently several options within FreeCAD to customize navigation, they are listed in the Mouse navigation page. Some of the options include: Revit, OpenCascade, Inventor, Touchpad etc...


  • Familiarity with C++ syntax
  • Ability to compile FreeCAD from source

Relevant source files

At the time of writing this documentation the relevant source code files are located at:

  • src/Gui/NavigationStyle.(h,cpp)
  • src/Gui/(Foo)NavigationStyle.cpp Foo is a placeholder for the different mouse/navigation modes, for example: Revit, Inventor, OpenCascade, Touchpad, CAD etc...
  • src/Gui/CMakeLists.txt - Add your new mouse/navigation mode here so it's picked up by the compiler
  • src/Gui/SoFCDB.cpp

Historical code commits

We can refer to previous code commits that added different mouse modes for orientation. Here are a few:

Source code